Gate and door



UNITED STATES PATENT OFFICE.

F. UKROEBEILn OE FORBESTOVVN, CALIFORNIA.

GATE AND DOOR SWING.

Speccaton of Letters Patent No. 30,327, dated October 9, 1860.

To all 'whom it may concern:

Be it known that I, F. W. KROEBER, of the town of Forbestown, in thecounty of Butte and State of California, have invented a new andImproved Self-Adjusting Gate and Door Swing; and I do hereby declarethat the following is a full and exact description, reference being hadto the accompanying drawings, which are made a part of thisspecification.

The nature of my invention consists in the application of the inclinedplane, the wheel, the lever and the spring, to the adjusting of gatesand doors to any required position.

To enable others skilled in the art, to make and use my invention, Iwill proceed to describe its construction and operation.

I make the gate or door of any of the usual forms, and hang it upon twohinges, so as to allow it to describe as large an arc as is required. Ithen fasten permanently to the top of the gate or door post my in clinedplane (nearly semicircular) of such dimensions or of such inclination aswill give the gate or door the required motion, as is represented in thedrawings by the letter A. I then place the lever B on the top of thegate or door, fastened at the point C by the foot piece represented bythe two parts D, D. In the end of the lever I place.

a small wheel E, so as to roll on the inclined plane A, and the lever somade is held forcibly against the inclined plane by the spring S, whichis made spiral, as is represented by s, in the ligure, or made of anyother form. IVhen therefore the gate or door is opened, the spring andlever acting through the wheel on the inclined plane will cause it toshut. The letter F in the iigures represents a hollow cylinder having aslot in which the lever may move vertically but not laterally, and madeto secure the spiral spring S, when a spiral is used. All these partsrepresented by the letters A, B., D, D, E, F, and S, I make of good anddurable metal.

In the explanation I would say that the lower hinge in the model isinverted for the purpose of security in transportation and for thatalone.

IVhat I claim as my invention, and desire to secure by Letters Patent,is

The application of the inclined plane, the wheel, the lever and thespring to the adjusting of gates and doors to any required position.

F. W. KROEBER.

Witnesses:

L. I). SMITH, I. BARTHOLOMEW.

